Table 135
Troubleshooting Test Steps
Values Results
6. Transfer Pump Inlet Regulator (TPIR) Flow Test
Refer to Illustration 87 .
A. Disconnect the TPIR return line from the drain port on the
TPIR. Install a suitable blanking cap on the open port in the
TPIR return line.
B. Connect a temporary drain line to the drain port on the
TPIR.
C. Place the end of the temporary drain line into a suitable
calibrated container.
D. With the isolator switch in the ON position but the engine
not running, use a suitable multimeter to measure the input
voltage to the EFLP. Record the reading.
E. With the isolator switch in the ON position but the engine
not running, measure the fuel flow from the temporary drain
line.
F. Refer to Illustration 88 or 89 for the minimum acceptable
flow rate.
G. Remove the temporary drain line from the drain port on the
TPIR. Connect the TPIR return line to the TPIR.
TPIR flow rate Result: The fuel flow is greater than the minimum limit.
Proceed to Test Step 8.
Result: The fuel flow is less than the minimum limit.
Proceed to Test Step 7.
7. Transfer Pump Inlet Regulator (TPIR) Return Test
A. Make sure that the TPIR return line is not blocked or
kinked.
B. Check that the Electric Fuel Lift Pump (EFLP) is operating
correctly.
C. Make sure that the fuel lines between the EFLP and the
TPIR are not blocked or kinked.
TPIR return Result: A fuel line is blocked or kinked.
Repair: Clear the fuel line or replace the fuel line.
Result: The EFLP is not operating correctly.
Repair: Refer to Troubleshooting, “Fuel Transfer Pump -
Test”.
Result: All fuel lines are OK and the EFLP appears to be op-
erating correctly.
Proceed to Test Step 8.
252 UENR4469-36
Symptom Troubleshooting
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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